JP2019004749A - Cocoa beverage - Google Patents

Abstract

To provide a cocoa beverage excellent in texture, and excellent in not only dispersion stability of a cocoa butter, but also redispersibility after deposition once.SOLUTION: There is provided a cocoa beverage containing a cocoa powder, milk, and carboxymethyl cellulose or a salt thereof, in which the carboxymethyl cellulose or the salt thereof has carboxymethyl substitution degree per glucose unit of 0.01 to 0.40, and B type viscosity at 25°C of concentration 1 mass% solution of 5 to 300 mPa s.SELECTED DRAWING: None

Description

  The present invention relates to a cocoa beverage.

  Cocoa drink is a highly nutritious favorite drink obtained by dissolving cocoa powder obtained by squeezing and separating cacao butter from cocoa mass that has been alkali-treated or not alkali-treated, and then dissolved in hot water or milk. Are known. Instant cocoa is prepared by mixing the above cocoa powder with other ingredients such as powdered milk and sugar in advance and dissolving it in hot water or milk.

  Such a cocoa beverage is in a state where fine powders such as cocoa powder contained therein are dispersed, and the dispersion accumulates over time, and thus periodic stirring is necessary.

  From such a problem, for example, in Patent Document 1, a carboxymethyl substitution degree per glucose unit of 0.01 to 0.40 and a crystallization degree of cellulose I type of 40% or more and less than 88% are used as a dispersion stabilizer. It has been proposed to use methylcellulose or a salt thereof.

JP2015-149929A

  However, in Patent Document 1, although the dispersion stability of the cocoa powder is excellent, there is still room for improvement in the redispersibility after the dispersion is once deposited.

  Therefore, an object of the present invention is to provide a cocoa beverage that is excellent in texture and excellent in not only the dispersion stability of cocoa powder, but also the redispersibility after being once deposited.

That is, the present invention includes the following (1) to (2).
(1) A cocoa beverage comprising cocoa powder, milk, and carboxymethylcellulose or a salt thereof, wherein the carboxymethylcellulose or a salt thereof has a degree of carboxymethyl substitution per glucose unit of 0.01 to 0.40 and a concentration of 1 A cocoa beverage characterized by having a B-type viscosity at 25 ° C. of a mass% aqueous solution of 5 to 300 mPa · s.
(2) The carboxymethyl cellulose or the salt thereof is contained in a range of 1 to 35% by weight with respect to 100% by weight of the cocoa powder.

  INDUSTRIAL APPLICABILITY The present invention can provide a cocoa beverage that is excellent in texture and excellent in not only the dispersion stability of cocoa powder but also the redispersibility after being once deposited.

  Hereinafter, the present invention will be described in detail. Unless otherwise specified, descriptions such as “AA to BB%” in the present invention represent “AA% or more and BB% or less”.

  The present invention is a cocoa beverage comprising cocoa powder, milk, and carboxymethylcellulose or a salt thereof, wherein the carboxymethylcellulose or a salt thereof has a degree of carboxymethyl substitution per glucose unit of 0.01 to 0.40 and a concentration. It is a cocoa beverage characterized by having a B-type viscosity at 25 ° C. of a 1 mass% aqueous solution of 5 to 300 mPa · s.

(cocoa powder)
The cocoa powder of the present invention is obtained by fermenting and roasting cacao seeds (cocoa beans), then removing the seed coat and germ and grinding the cocoa butter from the cocoa mass, and then the remaining cocoa cake. It is a pulverized product, and such cocoa powder contains about 8-25% fat.

  There are two types of methods for producing such cocoa powder: a broma process method and a Dutch process method described below.

  The broma process manufacturing method is a manufacturing method of squeezing cacao mass hydraulically, and the obtained cocoa powder is more reddish than a so-called chocolate color and feels bitter and sour, and is suitable for use in cocoa beverages.

  The Dutch process is a process of neutralization with alkali, and the cocoa powder produced by this process has a milder flavor and aroma than the cocoa powder produced by the broma process, and the color is also chocolate. It will be close. Cocoa powder made by the Dutch process is more suitable for ice cream, hot chocolate, baked goods, etc. than cocoa drinks.

(milk)
The milk of the present invention is not particularly limited as long as it is a liquid that contains raw milk as a raw material, such as milk, processed milk, milk beverages having a milk solid content of 3% or more, but milk fat content of 3% or more and non-fat milk solids. The milk is preferably 8% or more.

  By using milk that contains milk fat and non-fat milk solid content appropriately, the redispersibility of cocoa powder can be more effectively exhibited together with carboxymethylcellulose or a salt thereof.

(Carboxymethylcellulose or its salt)
The present invention relates to a carboxymethyl substituent (hereinafter also referred to as “degree of substitution” or “CM-DS”) per glucose unit of carboxymethylcellulose or a salt thereof (hereinafter sometimes referred to as “CMC”), In addition, the viscosity (hereinafter, simply referred to as “viscosity”) of an aqueous solution having a solid content concentration of 1% by mass measured with a B-type viscometer at 25 ° C. greatly increases dispersion stability and redispersibility after the dispersoid is deposited. It is an invention made by paying attention to the influence.

  When the degree of substitution of carboxymethyl cellulose is high, it becomes easy to dissolve in water, so that sufficient dispersion stability cannot be obtained. In addition, it becomes sticky and the texture becomes worse. On the other hand, when the degree of substitution is low, it is difficult to swell or dissolve in water, so that dispersion stability cannot be obtained, and undissolved substances are present, resulting in poor texture.

  The carboxymethyl cellulose or salt thereof of the present invention can be produced by subjecting a cellulose raw material to a carboxymethylation reaction. Cellulose materials include natural cellulose such as cellulose produced by microorganisms such as bleached or unbleached wood pulp, refined linters, and acetic acid bacteria, and cellulose dissolved in some solvent, such as copper ammonia solution and morpholine derivative, and then spun again. Examples thereof include regenerated cellulose, and fine cellulose that has been depolymerized by hydrolysis, alkali hydrolysis, enzymatic decomposition, explosion treatment, vibration ball mill treatment, or the like, or mechanically processed fine cellulose.

  The carboxymethyl cellulose or salt thereof of the present invention can be produced by subjecting a cellulose raw material to a carboxymethylation reaction. Cellulose materials include natural cellulose such as cellulose produced by microorganisms such as bleached or unbleached wood pulp, refined linters, and acetic acid bacteria, and cellulose dissolved in some solvent, such as copper ammonia solution and morpholine derivative, and then spun again. Examples thereof include regenerated cellulose, and fine cellulose that has been depolymerized by hydrolysis, alkali hydrolysis, enzymatic decomposition, explosion treatment, vibration ball mill treatment, or the like, or mechanically processed fine cellulose.

  Carboxymethyl cellulose or a salt thereof of the present invention is a known method, for example, using cellulose as a starting material, and 3 to 20 times by weight of a lower alcohol, specifically methanol, ethanol, N-propyl alcohol, isopropyl alcohol, N Use a mixed medium of butanol, isobutanol, tertiary butanol or the like alone or a mixture of two or more and water. The mixing ratio of the lower alcohol is 60 to 95% by weight. As the mercerizing agent, 0.5 to 20 times moles of alkali metal hydroxide, specifically sodium hydroxide or potassium hydroxide is used per glucose residue of the bottoming material. A bottoming raw material, a solvent, and a mercerizing agent are mixed and subjected to mercerization treatment at a reaction temperature of 0 to 70 ° C., preferably 10 to 60 ° C., and a reaction time of 15 minutes to 8 hours, preferably 30 minutes to 7 hours. Thereafter, a carboxymethylating agent is added in an amount of 0.05 to 2.0 times mol per glucose residue, a reaction temperature of 30 to 90 ° C., preferably 40 to 80 ° C., and a reaction time of 30 minutes to 10 hours, preferably 1 hour. Perform etherification reaction for ~ 4 hours.

  In the present invention, it is important that the substitution degree of the carboxymethyl group per glucose residue is carboxymethylcellulose or a salt thereof in the range of 0.01 to 0.40. When CM-DS exceeds 0.40, the water-soluble portion increases and the solubility in water increases, so that sufficient dispersion stability cannot be obtained. In addition, it becomes sticky and the texture becomes worse. On the other hand, when CM-DS is 0.01 or less, it is difficult to swell or dissolve in water, so that dispersion stability cannot be obtained, and undissolved material is present, resulting in poor texture.

  Furthermore, in order to make it easier to obtain the effects of the present invention, the CM-DS is preferably in the range of 0.05 to 0.38, more preferably in the range of 0.15 to 0.35.

  In the present invention, in order to increase the purity of carboxymethyl cellulose or a salt thereof, a known method, that is, 3 to 20 times by weight of a lower alcohol, specifically methanol, ethanol, N-propyl alcohol, isopropyl alcohol, N-butanol is used in a solvent. , Isobutanol, tertiary butanol or the like alone, or a mixture of two or more kinds and water, and purified to 99% purity, and then dried.

  For the purpose of uniform mixing with other materials, purified carboxymethyl cellulose or a salt thereof may be pulverized and / or classified by mechanical treatment.

  Specifically, the mechanical treatment can be performed by a cutting mill alone, or a cutting mill and an impact mill and / or an airflow mill alone or in combination, and further, several stages can be treated with the same model. Cutting mills include mesh mill (manufactured by Horai Co., Ltd.), Atoms (manufactured by Hyakuma Yamamoto Co., Ltd.), knife mill (manufactured by Pulman), granulator (manufactured by Herbolt), rotary cutter mill (Nara Co., Ltd.) Examples thereof are manufactured by Machine Works).

In addition, as impact type mills, Pulperizer (manufactured by Hosokawa Micron Corporation), Fine Impact Mill (manufactured by Hosokawa Micron Corporation), Super Micron Mill (Hosokawa Micron Corporation), Sample Mill (manufactured by Seisin Co., Ltd.), Tornado Examples include mills (Nikkiso Co., Ltd.), turbo mills (Turbo Industry Co., Ltd.), bevel impactors (Aikawa Tekko Co., Ltd.), and the like. On the other hand, CGS type jet mill (Mitsui Mine Co., Ltd.), jet mill (Misho Industry Co., Ltd.), Ebara Jet Micronizer (Manufactured by Ebara Corporation), Selenium Miller (Masuyuki) Sangyo Co., Ltd.). Furthermore, as the medium mill, a vibration ball mill or the like is exemplified. On the other hand, examples of the wet pulverizer include a mascolloider (Masuyuki Sangyo Co., Ltd.) and the like.
In the dry pulverization step, by providing a classification step after pulverization, the fine portion and the coarsely pulverized portion can be separated. Moreover, a classification process can be set also with respect to the dried material after drying wet pulverization or a ground material.

  The average particle size after pulverization of carboxymethylcellulose or a salt thereof finely pulverized by any one of the above pulverizers is not particularly limited, but is preferably 0.1 to 300 μm, and preferably 10 to 100 μm. If it is less than 0.1 μm, it is complicated in production, and if it exceeds 300 μm, uniform mixing with the food used for the dispersion stabilizer is difficult and undesirable.

  It is important that the carboxymethylcellulose or salt thereof of the present invention thus obtained has a viscosity of 5 to 300 mPa · s in an aqueous solution with a solid content concentration of 1% by mass measured with a B-type viscometer at 25 ° C. Yes, preferably 10 to 280 mPa · s, more preferably 15 to 260 mPa · s. When the viscosity of CMC falls within this range, the texture is excellent and appropriate redispersibility can be provided.

  The cocoa drink of this invention can add additives, such as sugar and powdered milk, in the range which does not inhibit the effect of this invention.

  Hereinafter, the embodiments of the present invention will be described by way of examples, but the present invention is not limited thereto. The “parts” indicating the blending amounts all represent “parts by weight”. Moreover, various physical properties of the substance according to the present invention were evaluated by the following methods.

<Measuring method of CM-DS>
About 2.0 g of the sample was precisely weighed and placed in a 300 mL conical flask with a stopper. A solution of 100 mL of special concentrated nitric acid in 1000 mL of nitric acid methanol was added, and the mixture was shaken for 3 hours to convert carboxymethylcellulose salt (CMC) to H-CMC. The absolute dry H-CMC was accurately weighed in an amount of 1.5 to 2.0 g and placed in an Erlenmeyer flask with a 300 mL stopper. H-CMC was moistened with 15 mL of 80% methanol, 100 mL of 0.1 N NaOH was added, and the mixture was shaken at room temperature for 3 hours. Excess NaOH was back titrated with 0.1N-H2SO4 using phenolphthalein as an indicator. CMC-DS was calculated by the following formula.
A = [(100 × F′−0.1N—H 2 SO 4 (mL) × F) × 0.1] / (absolute dry weight of H-CMC (g))
CM-DS = 0.162 × A / (1-0.058 × A)
A: 1N-NaOH amount required for neutralizing 1 g of H-CMC (mL)
F: Factor of 0.1N-H2SO4 F ': Factor of 0.1N-NaOH

<Measurement of crystallinity>
The crystallinity of cellulose type I was determined by measuring the X-ray diffraction of the sample. The X-ray diffraction was measured by placing the sample on a glass cell and using an X-ray diffraction measurement apparatus (LabX XRD-6000, manufactured by Shimadzu Corporation). The degree of crystallinity is calculated using a method such as Segal, and the diffraction intensity of 2θ = 10 ° to 30 ° in the X-ray diffraction diagram is used as a baseline, and 0 of 2θ = 22.6 °.
It was calculated from the diffraction intensity of the 02 plane and the diffraction intensity of the amorphous portion at 2θ = 18.5 ° by the following equation.
Xc = (I002c−Ia) / I002c × 100
Xc = crystallinity of cellulose type I (%)
I002c: 2θ = 22.6 °, diffraction intensity of 002 plane Ia: 2θ = 18.5 °, diffraction intensity of amorphous part

(Production Example 1: Production of CMC1)
A biaxial kneader whose rotational speed was adjusted to 100 rpm was added with 750 parts of IPA and 10 parts of sodium hydroxide dissolved in 250 parts of water, and 100 parts of commercially available dissolved pulp was completely dried. Mercerized cellulose was prepared by stirring and mixing at 30 ° C. for 90 minutes. Further, 8 parts of monochloroacetic acid dissolved in 10 parts of 90% IPA was added while stirring, and the mixture was heated to 70 ° C. and subjected to etherification reaction for 90 minutes. After completion of the reaction, the solution was neutralized, drained, dried and pulverized, and the degree of carboxymethyl substitution per anhydroglucose unit (CM-DS) was 0.04, and the solid content concentration measured with a B-type viscometer at 25 ° C was 1 A carboxymethyl cellulose sodium 1 (CMC1) having a B-type viscosity of 13 mPa · s and a crystallinity of 0% was obtained.

(Production Example 2: Production of CMC2)
A biaxial kneader whose rotational speed was adjusted to 100 rpm was added with 740 parts of IPA and 16 parts of sodium hydroxide in 230 parts of water, and 100 parts of commercially available dissolved pulp was completely dried. Mercerized cellulose was prepared by stirring and mixing at 30 ° C. for 90 minutes. Further, 15 parts of monochloroacetic acid dissolved in 17 parts of 90% IPA was added with stirring, and the mixture was heated to 70 ° C. and subjected to an etherification reaction for 90 minutes. After completion of the reaction, the solution was neutralized, drained, dried and pulverized, and the solid content concentration measured with a B-type viscometer at an carboxymethyl substitution degree (CM-DS) of 0.14 per anhydroglucose unit was 0.14. A carboxymethyl cellulose sodium 2 (CMC2) having a B-type viscosity of 22% by mass and a crystallinity of 0% was obtained.

(Production Example 3: Production of CMC3)
To a biaxial kneader whose rotational speed was adjusted to 100 rpm, 500 parts of isopropyl alcohol (IPA) and 30 parts of sodium hydroxide dissolved in 200 parts of water were added, and 100 parts of commercially available dissolved pulp was completely dried. Mercerized cellulose was prepared by stirring and mixing at 30 ° C. for 90 minutes. Further, 19 parts of monochloroacetic acid dissolved in 45 parts of 90% IPA was added with stirring, and the mixture was heated to 70 ° C. and subjected to an etherification reaction for 90 minutes. After completion of the reaction, neutralization, liquid removal, drying and pulverization were conducted. CM-DS 0.19, B-type viscosity 53 mPa · s of a 1% by weight solid content aqueous solution measured with a B-type viscometer at 25 ° C., crystals Sodium carboxymethylcellulose 3 (CMC3) having a degree of conversion of 0% was obtained.

(Production Example 4: Production of CMC4)
To a biaxial kneader whose rotational speed was adjusted to 100 rpm, 750 parts of isopropyl alcohol (IPA) and 18 parts of sodium hydroxide dissolved in 175 parts of water were added, and 100 parts of commercially available dissolved pulp was completely dried. Mercerized cellulose was prepared by stirring and mixing at 30 ° C. for 90 minutes. Further, 24 parts of monochloroacetic acid dissolved in 30 parts of 90% IPA was added with stirring, and the mixture was heated to 70 ° C. and subjected to an etherification reaction for 90 minutes. After completion of the reaction, neutralization, liquid removal, drying, pulverization, CM-DS 0.28, B-type viscosity of 1% by mass aqueous solution measured with a B-type viscometer at 25 ° C., 100 mPa · s, crystals Sodium carboxymethylcellulose 4 (CMC4) having a degree of conversion of 0% was obtained.

(Production Example 5: Production of CMC5)
To a biaxial kneader whose rotational speed was adjusted to 100 rpm, 800 parts of isopropyl alcohol (IPA) and 15 parts of sodium hydroxide dissolved in 150 parts of water were added, and 100 parts of commercially available dissolved pulp was completely dried. Mercerized cellulose was prepared by stirring and mixing at 30 ° C. for 90 minutes. Further, 27 parts of monochloroacetic acid dissolved in 30 parts of 90% IPA was added while stirring, and the mixture was heated to 70 ° C. and subjected to an etherification reaction for 90 minutes. After completion of the reaction, neutralization, liquid removal, drying and pulverization were performed. CM-DS 0.34, B-type viscosity of 1% by weight aqueous solution measured by B-type viscometer at 25 ° C., 210 mPa · s, crystals Sodium carboxymethylcellulose 5 (CMC5) having a degree of conversion of 0% was obtained.

(Production Example 6: Production of CMC6)
To a biaxial kneader whose rotational speed was adjusted to 100 rpm, 800 parts of isopropyl alcohol (IPA) and 33 parts of sodium hydroxide dissolved in 150 parts of water were added, and 100 parts of commercially available dissolved pulp was completely dried. Mercerized cellulose was prepared by stirring and mixing at 30 ° C. for 90 minutes. Further, 29 parts of monochloroacetic acid dissolved in 45 parts of 90% IPA was added with stirring, and the mixture was heated to 70 ° C. and subjected to etherification reaction for 90 minutes. After completion of the reaction, neutralization, liquid removal, drying, pulverization, CM-DS 0.37, B-type viscosity 280 mPa · s of 1% by weight aqueous solution with B-type viscometer measured at 25 ° C, crystals Sodium carboxymethylcellulose 6 (CMC6) having a degree of conversion of 0% was obtained.

(Production Example 7: Production of CMC7)
To a biaxial kneader whose rotational speed was adjusted to 100 rpm, 500 parts of isopropyl alcohol (IPA) and 48 parts of sodium hydroxide dissolved in 100 parts of water were added, and 100 parts of commercially available dissolved pulp was completely dried. Mercerized cellulose was prepared by stirring and mixing at 30 ° C. for 90 minutes. Further, 37 parts of monochloroacetic acid dissolved in 45 parts of 90% IPA was added with stirring, and the mixture was heated to 70 ° C. and subjected to an etherification reaction for 90 minutes. After completion of the reaction, neutralization, liquid removal, drying and pulverization were conducted. CM-DS 0.50, B-type viscosity 400 mPa · s of a 1% by weight solid content aqueous solution measured with a B-type viscometer at 25 ° C., crystals Sodium carboxymethylcellulose 7 (CMC7) having a degree of conversion of 0% was obtained.

<Examples 1-9, Comparative Examples 1-2>
In order to obtain the component ratio of the following cocoa beverage formulation, 1.0 part by weight of cocoa powder (pure cocoa, manufactured by Vanhoeten) and the CMCs of the examples and comparative examples in 100 mL mayonnaise bottles so as to have the prescribed amounts shown in Table 2 Measure, mix well, and then add 99.0 parts by weight of milk (component non-adjusted milk (raw milk 100%), manufactured by Meiji Dairies Co., Ltd.) and use a general-purpose digital stirrer (EUROSTAR, manufactured by IKA) at 120 rpm for 5 minutes. The cocoa beverages of Examples and Comparative Examples described in Table 3 were prepared.

<Initial dispersibility>
The cocoa beverages listed in Table 3 were stirred at 120 rpm for 5 minutes using EUKA STAR made by IKA to prepare a uniformly dispersed cocoa beverage. The cocoa beverage was quickly transferred to a 100 mL graduated cylinder and left on a horizontal table for 5 minutes. The volume of the supernatant at this time was confirmed visually and evaluated according to the following criteria.
○: The volume of the supernatant is less than 2 mL, and a significant improvement in maintaining the dispersed state is observed. Δ: The volume of the supernatant is 2 mL or more and less than 5 mL, and an improvement in maintaining the dispersed state is observed. ×: The volume of the supernatant is 5 mL or more. Yes, no improvement in dispersion status is observed

<Redispersibility evaluation>
The cocoa beverages listed in Table 3 were stirred at 120 rpm for 5 minutes using EUKA STAR made by IKA to prepare a uniformly dispersed cocoa beverage, which was allowed to stand for 1 hour on a horizontal table and dispersed. Precipitated. Then, the lid of the mayonnaise bottle containing the cocoa beverage was closed, shaken up and down three times by hand, the amount of cocoa powder settled at the bottom was visually confirmed, and the following criteria were evaluated.

○: No cocoa powder remains at the bottom and the background is completely transparent △: The cocoa powder remains at the bottom but a part of the background is visible ×: The cocoa powder remains at the bottom and the background is completely Invisible

<Food texture>
The cocoa beverages listed in Table 3 were sampled by 20 trained panelists, and the texture (feeling of throat) of the cocoa beverages was evaluated according to the following criteria.
Reference point)
3 points: Easy to drink without being entangled in the throat
2 points: I get the impression that the cocoa drink remains in the throat.
1 point: I feel a strong impression and a heavy impression.
From the average score, the sensation of sensation was evaluated according to the following criteria.
Evaluation)
○: 2.5 points or more, and the feeling of throat is good.
(Triangle | delta): It is 1.5 points or more and less than 2.5 points | pieces, and although it is slightly inferior, it is in a practical range.
X: It is less than 1.5 and a feeling of throat is bad.

Claims (2)

  A cocoa beverage comprising cocoa powder, milk, and carboxymethylcellulose or a salt thereof, wherein the carboxymethylcellulose or a salt thereof has an carboxymethyl substitution degree of 0.01 to 0.40 per glucose unit, and an aqueous solution having a concentration of 1% by mass. A cocoa beverage having a B-type viscosity at 25 ° C. of 5 to 300 mPa · s.   2. The cocoa beverage according to claim 1, wherein the carboxymethyl cellulose or a salt thereof is contained in a range of 1 to 35 wt% with respect to 100 wt% of the cocoa powder.